Impromptu Science Lesson

While I was getting ready to wash up some dishes today I remembered the older two had left water cups in the van after we got home from church on Sunday.  So I dashed out to the garage to grab them, and wow!  All the water in their cups were frozen solid.  The kids and I had fun trying to melt the ice enough to get the big cup-shaped cubes out.  [Insert science lesson here on how water can be a liquod, solid or gas.] ;-)